The only waterfall is located at contour level 60 m (200 ft),[6]: 4  where the river runs through narrow sections with steep hillsides.

After the Sjønstå power plant was built, large quantities of water flowed from Langvatnet down to Øvervatnet, and this has led to less pollution.

[6]: 7 There are several hydroelectric power stations on the river operated by Salten Kraftsamband:[7] In 2013, a concession was requested from the Norwegian Water Resources and Energy Directorate to build the Sjønstå Falls Hydroelectric Power Station.

The development will create a further reduction in water flow on a 1,370-meter (4,490 ft) stretch of the Sjønstå River.

[8] There are also plans to create the Lappland Hydroelectric Power Station, which, if it is realized, will change the flow of water in the Sjønstå River significantly by drawing large quantities of water from Swedish watercourses into Norway.